diff options
| author | Mark Wielaard <mark@klomp.org> | 2019-08-21 12:28:56 +0200 |
|---|---|---|
| committer | Mark Wielaard <mark@klomp.org> | 2019-08-26 11:28:17 +0200 |
| commit | 347e6b7a38f78c758e9ab0d3372222ccd4a4f6d9 (patch) | |
| tree | 854a35f63177d868c5b45f600f906e7068cac621 | |
| parent | 37fa94df1554aca83ec10ce50bc9bcb6957b204e (diff) | |
readelf: Add optional "SECTION" argument for --notes.
There are multiple sections that can contain ELF Notes. It is sometimes
nice to just list the notes from a specific section.
-n, --notes[=SECTION] Display the ELF notes
Signed-off-by: Mark Wielaard <mark@klomp.org>
| -rw-r--r-- | src/ChangeLog | 7 | ||||
| -rw-r--r-- | src/readelf.c | 13 |
2 files changed, 19 insertions, 1 deletions
diff --git a/src/ChangeLog b/src/ChangeLog index c2102fcd..ad673c11 100644 --- a/src/ChangeLog +++ b/src/ChangeLog @@ -1,3 +1,10 @@ +2019-08-26 Mark Wielaard <mark@klomp.org> + + * readelf (options): Add OPTION_ARG_OPTIONAL "SECTION" for notes. + (notes_section): New global variable. + (parse_opt): Set notes_section. + (handle_notes): Check if notes_section is set. + 2019-07-26 Florian Weimer <fweimer@redhat.com> Mark Wielaard <mark@klomp.org> diff --git a/src/readelf.c b/src/readelf.c index 2084fb1f..24be7a9a 100644 --- a/src/readelf.c +++ b/src/readelf.c @@ -114,7 +114,7 @@ static const struct argp_option options[] = { "symbols", 's', "SECTION", OPTION_ARG_OPTIONAL, N_("Display the symbol table sections"), 0 }, { "version-info", 'V', NULL, 0, N_("Display versioning information"), 0 }, - { "notes", 'n', NULL, 0, N_("Display the ELF notes"), 0 }, + { "notes", 'n', "SECTION", OPTION_ARG_OPTIONAL, N_("Display the ELF notes"), 0 }, { "arch-specific", 'A', NULL, 0, N_("Display architecture specific information, if any"), 0 }, { "exception", 'e', NULL, 0, @@ -190,6 +190,9 @@ static bool print_symbol_table; /* A specific section name, or NULL to print all symbol tables. */ static char *symbol_table_section; +/* A specific section name, or NULL to print all ELF notes. */ +static char *notes_section; + /* True if the version information should be printed. */ static bool print_version_info; @@ -439,6 +442,7 @@ parse_opt (int key, char *arg, case 'n': print_notes = true; any_control_option = true; + notes_section = arg; break; case 'r': print_relocations = true; @@ -12408,6 +12412,13 @@ handle_notes (Ebl *ebl, GElf_Ehdr *ehdr) /* Not what we are looking for. */ continue; + if (notes_section != NULL) + { + char *sname = elf_strptr (ebl->elf, shstrndx, shdr->sh_name); + if (sname == NULL || strcmp (sname, notes_section) != 0) + continue; + } + printf (gettext ("\ \nNote section [%2zu] '%s' of %" PRIu64 " bytes at offset %#0" PRIx64 ":\n"), elf_ndxscn (scn), |